Death Note

Light Yagami is a genius high school student who is about to learn about life through a book of death. When a bored shinigami, a God of Death, named Ryuk drops a black notepad called a Death Note</i>, Light receives power over life and death with the stroke of a pen. Determined to use this dark gift for the best, Light sets out to rid the world of evil… namely, the people he believes to be evil. Should anyone hold such power? The consequences of Light’s actions will set the world ablaze. (Source: Viz Media)

BTOOOM!

In the blink of the mind's eye, Ryouta Sakamoto suddenly finds himself transported from playing the hit Btoom! video game to being stranded on a mysterious island, equipped with a day's worth of provisions, a bag of bombs, a strange crystal embedded in his left hand and a huge gaping hole in his memory. But it doesn't take long to figure out what's going on, especially after the first person Ryouta meets tries to kill him. Someone is attempting to recreate the ultra-violent Btoom! game in real life, and the island has been filled with an army of other unwilling players, each armed with one of the multiple variants of explosive weapons called BIM. Fortunately, Ryouta's an ace Btoom! player, but this insane version of the game has no reset switch or second lives, and there's only one way off the island: kill seven other people before they can kill you! Can Ryouta repurpose his game based skills fast enough to survive? (Source: Sentai Filmworks)

Platinum End

When life becomes too much for Mirai to bear and attempts taking his own life, he’s saved by Nasse, a guardian angel who offers him a chance at becoming the new god. To do so, he must face off against 12 other candidates within 999 days. Mirai, who was once at rock bottom, now finds himself with supernatural powers in a battle royale for the highest title. (Source: Funimation)